as unable to turn; while the bridle
drawn firmly in front hindered it from retiring.

Hamersley, busily engaged in loading the rifles, nevertheless found time
to glance at Wilder's doings, wondering what he was about.

"It air a pity!" soliloquised the latter, repeating his former words in
similar tones of commiseration. "F'r all that, the thing must be done.
If thar war a rock big enough, or a log, or anythin'. No! thar ain't
ne'er another chance to make kiver. So hyar goes for a bit o'
butcherin'."

As the guide thus delivered himself, Hamersley saw him jerk the bowie
knife from his belt, its blade red and still reeking with human gore.
In another instant its edge was drawn across the throat of the horse,
from which the blood gushed forth in a thick, strong stream, like water
from the spout of a pump. The creature made a last desperate effort to
get off, but with its forelegs over the rocks and head held down between
them, it could not stir from the spot. After a convulsive throe or two,
it sank down till its ribs rested upon the straddled stone; and in this
attitude it ended its life, the head after a time drooping down, the
eyes apparently turned with a last reproachful look upon the master who
had murdered it!

"It hed to be did; thar war no help for it," said Wilder, as he
hurriedly turned towards his companion, adding: "Have you got the guns
charged?"

Hamersley made answer by handing him back his own rifle. It was loaded
and ready. "Darn the stinkin' cowarts!" cried the guide, grasping the
gun, and facing towards the plain. "I don't know how it may all eend,
but this'll keep 'em off a while, anyhow."

As he spoke he threw himself behind the body of the slaughtered steed,
which, sustained in an upright position between the counterpart walls,
formed a safe barricade against the bullets and arrows of the Indians.
These, now riding straight towards the spot, made the rocks resound with
exclamations of surprise--shouts that spoke of a delayed, perhaps
defeated, vengeance.

They took care, however, not to come within range of that long
steel-grey tube, that, turning like a telescope on its pivot, commanded
a semicircle of at least a hundred yards' radius round the opening in
the cliff.

Despite all the earnestness of their vengeful anger, the pursuers were
now fairly at bay, and for a time could be kept so.

Hamersley looked upon it as being but a respite--a mere temporary
deliverance from danger,